Question

In: Mechanical Engineering

Air expands through a turbine operating at steady state. At the inlet, p1 = 150 lbf/in.2,...

Air expands through a turbine operating at steady state. At the inlet, p1 = 150 lbf/in.2, T1 = 1400°R, and at the exit, p2 = 14.8 lbf/in.2, T2 = 900°R. The mass flow rate of air entering the turbine is 5 lb/s, and 65,000 Btu/h of energy is rejected by heat transfer.

Neglecting kinetic and potential energy effects, determine the power developed, in hp.

Solutions

Expert Solution


Related Solutions

Air expands through a turbine operating at steady state. At the inlet, p1 = 150 lbf/in.2,...
Air expands through a turbine operating at steady state. At the inlet, p1 = 150 lbf/in.2, T1 = 1400°R, and at the exit, p2 = 14.8 lbf/in.2, T2 = 900°R. The mass flow rate of air entering the turbine is 11 lb/s, and 65,000 Btu/h of energy is rejected by heat transfer. Neglecting kinetic and potential energy effects, determine the power developed, in hp.
Water vapor at 800 lbf/in.2, 1000 F enters a turbine operating at steady state and expands...
Water vapor at 800 lbf/in.2, 1000 F enters a turbine operating at steady state and expands adiabatically to 2 lbf/ in.2, developing work at a rate of 490 Btu per lb of vapor flowing. Determine the condition at the turbine exit: two- phase liquid–vapor or superheated vapor? Also, evaluate the isentropic turbine efficiency. Kinetic and potential energy effects are negligible.
Air enters a turbine operating at steady state at 6 bar, 1200 K and expands to...
Air enters a turbine operating at steady state at 6 bar, 1200 K and expands to 0.8 bar. The turbine is well insulated, and kinetic and potential energy effects can be neglected. Assuming ideal gas behavior for the air, what is the maximum theoretical work that could be developed by the turbine in kJ per kg of air flow?
Air enters a turbine operating at steady state at 6 bar, 1600 K and expands to...
Air enters a turbine operating at steady state at 6 bar, 1600 K and expands to 0.8 bar. The turbine is well insulated, and kinetic and potential energy effects can be neglected. Assuming ideal gas behavior for the air, what is the maximum theoretical work that could be developed by the turbine in kJ per kg of air flow?
Air enters a turbine operating at steady state at 10 bar, 1200 K and expands to...
Air enters a turbine operating at steady state at 10 bar, 1200 K and expands to 0.8 bar. The turbine is well insulated, and kinetic and potential energy effects can be neglected. Assuming ideal gas behavior for the air, what is the maximum theoretical work that could be developed by the turbine in kJ per kg of air flow?
Air enters a compressor operating at steady state with a pressure of 14.7 lbf/in.2, a temperature...
Air enters a compressor operating at steady state with a pressure of 14.7 lbf/in.2, a temperature of 70°F, and a volumetric flow rate of 500 ft3/min. The air velocity in the exit pipe is 700 ft/s and the exit pressure is 133 lbf/in.2 If each unit mass of air passing from inlet to exit undergoes a process described by pv1.34 = constant, determine (a) the exit temperature, in °F, and (b) the diameter of the exit pipe, in inches.
Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to...
Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow rate is 2.52 kg/s, and the isentropic turbine efficiency is 92%. Stray heat transfer and kinetic and potential energy effects are negligible. Determine the power developed by the turbine, in kW.
Water at p1 = 20 bar, T1 = 400oC enters a turbine operating at steady state...
Water at p1 = 20 bar, T1 = 400oC enters a turbine operating at steady state and exits at p2 = 1.5 bar, T2 = 220oC. The water mass flow rate is 4000 kg/hour. Stray heat transfer and kinetic and potential energy effects are negligible. Determine the power produced by the turbine, in kW, and the rate of entropy production in the turbine, in kW/K.
Air enters the compressor of a simple gas turbine at p1 = 14 lbf/in2, T1 =...
Air enters the compressor of a simple gas turbine at p1 = 14 lbf/in2, T1 = 520°R. The isentropic efficiencies of the compressor and turbine are 83 and 87%, respectively. The compressor pressure ratio is 16 and the temperature at the turbine inlet is 2500°R. The volumetric flow rate of the air entering the compressor is 9000 ft3/min. Use an air-standard analysis. Determine all temperatures at each state. A) Determine the net power developed, in Btu/h. B) Determine the thermal...
Air enters the compressor of a simple gas turbine at p1 = 14 lbf/in2, T1 =...
Air enters the compressor of a simple gas turbine at p1 = 14 lbf/in2, T1 = 520°R. The isentropic efficiencies of the compressor and turbine are 83 and 87%, respectively. The compressor pressure ratio is 16 and the temperature at the turbine inlet is 2500°R. The volumetric flow rate of the air entering the compressor is 9000 ft3/min. Use an air-standard analysis. Determine the net power developed, in Btu/h.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT